midgley



T. MIDGLEY.

-DEVICE FOR REMOVING CORES FROM TIRE CASINGS.

APPLI CATION FILED mun. 1919.

1,438,930, Patented Dec. 1922.v

2 SHEETS IE I 1.

ATTORNEYvS.

T. MIDGLEY. DEVICE FOR REMOVING CORES FROM TIRE CASINGS.

IAPPLICATION mgo JUNE 4.1919.

Patented Dec. 1 2, 1922* 2 SHEETSSHEET 2.

Patented Dec. 12., 1922.

assie m stares tartar caries.

THOMAS Minster, or SPRINGFIELD, massnor usnrrs, assmnon r THE FISK RUBBER COMPANY, or CHICOPEE FALLS, MAESACHUSETTd, aoonroaarion OF MASSACHUSETTS. I a

nnvion non nnirovins oonns i noarrrnn casinos.

Application 7 filed June a,

T 0 all whom it may concern:

Be it known that L Trroiiras iii momma citizen of the United States of America, re siding at Springfield, in. the county of 5 Hampden and State of lilassachusetts, have inventedcertain new and useful Improvements 1n Devlces iorltemovingCores from Tire Casings, oi: which the following is a the vulcanization ofstraight sidetires troin I the tires after the vulcanization is complete.

It has forits object theelimination of much of the diificult hand work which is necessary under the present practice and the provision of a machine whichwill remove the core sections from even the largest casings.

As is well known clincher tires, which have expansible beads, are usually vulcanized on solid cores. moved from the cores by expanding one bead and slipping it over the crest of the core. Machines have been devised for accomplishing' thisoperation automatically. With what are known. as straight sidetires, however, the beads are made inextensible by the inclusion of wire reinforcing members. I

canized, the means holding the core sections together are removed and the casingfreed' from the core by the insertion of a hand tool called a slicing bar between the casing and the core in such a manner as to bear against the crest of one ofthecore sections {and force that core section inwardly, thus removing it fromthe casing.

tires, is not applicableto the larger sizes.

The weight of one ofthe core sections for a 40x8 tire, for example, is about 175 pounds, and the effort required to tree this.

These tires can be re v This method, while generally satisfactory on small size 1919. Serial No. 301,783.

section from the extremely stifi tire casing,

s enormous.

My present invention is designed'particularly to assist in the removal of core sections from large sized straight side tires. The device will now be described in connection with the. accompanying drawings, in which- Fig. l'is a side elevation of thedevice showing a large sized tirein place .upona collapsible or sectional core ;v

Fig.2is a vertical section through the same; and

. Fig.3 is a detail of one of the collapsible cores showing; one section partially removed.

The machine is mounted upon a base 10 provided with vertical guide members 11 and having grooved rollers 12 adapted to support a tire casing; and core for manual rotation. The casing, represented at 13, is mounted on a core havingsegmental sections 14, 15, l6, l7 and 18. As shown, section 14 is what is known as the key section. The inner circumferences of all of the sections are formedwith the customary flanges 19, which, when the core is assembled, form a continuous flange similar to that of aone In order to draw the core sections out of the casing tongs are provided, having mempiece core.

bers 20 and 21 pivoted together atg22 and "having hooks 23 at their upper ends. The

upper ends of the tongs are connected by chains 24 to hook 25 attached to any suitable hoistinp; device shown diagrammatically at 26. The lower end of the tongs have inwardly projecting portions 27 adapted to grasp tions. I a r v I The headset the tire are positively, restrained against;,-upward movement and against buckling by plates 28, slidable in guides 29 supported from the base 10 and curved to fit the inner circumference of the beads. These plates are freelys'lidable in the guides, so that as the core sections are-drawn upwardly they will, by the cam-like action of their sides (see Fig. 2),, force both the beads and the plates outwardly. To assist in brlnging the plates into engagement with the beads,

and to enable both plates to be controlled from either side of the machine the following construction'is preferred, although the plates may be separately operated if desired.

the flange 1 9 ofone of the core secf To the bottom of each plate is secured a lug l s; pin and slot connection. with The two hell cranks pivthe base 10, and are connected together by a pin and slot connection so that any motion inipartec to one will be transmitted to the other. Pedals 3% may be attached to the bell cranks for convenience in operation.

The operation of my device is as follows. hen the tire casing has been vulcanized, it is placed, together with the core contained therein, on rolls l2 and within guide members 11 with the my section of the core at the bottom, Plates are placed in position by pressin treadlos 341. The tongs are then :aused to p flange l9, and by means of the hoistii crevice, are (ll'll 'n upwa dly, thus pullin the key section out of the tire in the manner indicated in 3, The upward pull or-tile hoisting device serves t clamp the lower ends of the tongs firmly together so that there is no danger of the core slipping out of the grip of the tongs, As the hoisting device is raised the Sh. es the core sect-ion force both the beads and plates 28 outwardly, without necessit for the use of a slicing bar. desi ed, however, a slicing bar can be used to partially loosen the casing from the cor before they are placed in the machine. 'll hen the first section has been withdrawn from the core, it is removed from the tongs, the tire is rotated so as to bring another core section into position, and the operation is repeated until all of the core sections ha e been removed.

I claim- 1. A device adapted to operate upon a succession of sectional cores to remove them from tire casings, comprising: a support adapted to'receive a tire casing from which a core is to be removed, and means operable upon the core while the tire is so supported to withdraw one of the core sections from the casing.

2. In a device of the class described, means for supporting a sectional core with a tire casing thereon, means for withdrawing one of the core sections from the casing, and means for preventing the heads of the cars ingbeing moved with the core section. v

8. Ina device of the class described, means for supporting a sectional core with a tire casingthereon, s for n oving; one of the core sections radially inwardly to separate it from the tire 0 sun and means for rest-raining; the l the casing against radial movement.

i. in a device the class described, means for supporting a sectional core with a tire casino thereon, a pair of plates adapted to en e portion of the heads of the tire to prevent radial movement thereof, i cans for grasping-1' one of the core secand withdrawi it from the casing.

in a device or the class described, means for supporting a sectional core with a tire casing t ,ereon, a pair of plates adapted to engage a portion of the beads of the casing; to prevent adial movement thereof, means to move tlr plate into on, ring position, and means to grasp one or 1e sections of the core a d withdraw it from. the tire casing.

p t a sectional core with a tire casscreen, a pair of plates adapted to enape a )ortion of the heads of the tire casing; prevent radial movement thereof, a pair of tongs adapted to grasp the flange of the core, means to move the tongs to draw one or one sections of the core out of the casing.

7, In a device of the class described, means to support a sectional core with a tire cas- '1' thereon, a pair 01 plates slidable axially with respect to the core and adapted to abut gainst the core above the beads of the raising, tongs adapted to grasp the flange of the core, and m ans to move the tongs to draw one of the sections of the core out of the casing.

8. In a device of the class described, means to support a sectional core with a tire casing: thereon, a pair or plates siidable axially with respect to the coreand constructed and arranged to restrain the beads of the casing against inward radial movement and to be forced apart by the sides of one of the core sections as it is withdrawn from the casing, and means for ,g'raspingone of the core sections and withdrawing it from the casin a device of the class described, means 0 "u 3; o

THQMAS l HDGLEY. 

